During this trip to China, I was invited by a heavy metal manufacturer to visit their company. They were doing a demonstration of a humongous 600W YAG cutting machine and other small sold state laser machine. From the video, you will see how big of the machine and the scale of the company. The price of this monster is not cheap though. For the size of 2.5M*1.5M (8'x5'), they're asking for $76,500

The good about this machine is that even though the machine is big but it could cut a hole of 1mm in diameter without any trouble. The thickness of the metal sheet is 1.85mm (correction). It could cut up to 3.8mm